KoreanSAT / data /json /2022 /math_25_geom.txt
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25. μ’Œν‘œν‰λ©΄μ—μ„œ 두 직선
\[
\frac{x+1}{2} = y - 3, \quad x - 2 = \frac{y - 5}{3}
\]
κ°€ μ΄λ£¨λŠ” 예각의 크기λ₯Ό $\theta$라 ν•  λ•Œ, $\cos \theta$의 값은? [3점]
\begin{itemize}
\item[1] $\frac{1}{2}$
\item[2] $\frac{\sqrt{5}}{4}$
\item[3] $\frac{\sqrt{6}}{4}$
\item[4] $\frac{\sqrt{7}}{4}$
\item[5] $\frac{\sqrt{2}}{2}$
\end{itemize}